Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
matra.co.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-06 14:12:49 UTC · ↺ Refresh
MX Hostnames
- matra-co-cr.mail.protection.outlook.com
MX Priorities
- matra-co-cr.mail.protection.outlook.com: 0
A / AAAA Records
- 3.134.55.220 ↩ ec2-3-134-55-220.us-east-2.compute.amazonaws.com
Mail Server IPs
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.p201.dns.oraclecloud.net hostmaster.matra.co.cr 18 3600 600 604800 1800
Primary NS (mname)
ns1.p201.dns.oraclecloud.net
Admin Email (rname)
hostmaster@matra.co.cr
Serial
18
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.p201.dns.oraclecloud.net
ns2.p201.dns.oraclecloud.net
ns3.p201.dns.oraclecloud.net
ns4.p201.dns.oraclecloud.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:138.118.83.216 ip4:138.118.82.168 ip4:138.118.82.169 ip4:190.171.126.45 ip4:189.254.247.200 ip4:201.163.95.227 ip4:187.174.147.115 ip4:177.93.28.40 ip4:177.93.28.41 ip4:177.93.28.42 ip4:177.93.28.43 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; sp=reject; fo=0:1:d:s; ri=604800; adkim=r; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 ip4:138.118.83.216 ip4:138.118.82.168 ip4:138.118.82.169 ip4:190.171.126.45 ip4:189.254.247.200 ip4:201.163.95.227 ip4:187.174.147.115 ip4:177.93.28.40 ip4:177.93.28.41 ip4:177.93.28.42 ip4:177.93.28.43 include:spf.protection.outlook.com -all
- MS=3250C206BF58A995C56175FAEB6794060889F611
- agvn2q4eup0ikatf535sei73j9
- nclrh1nsvkt742qfk272lupkre
- 4u213rt69trlj9gap6fd83tl4c11vqueekcubdk7jblmekcuk6cj
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for matra.co.cr
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits